6 CONTENTS. 



Dicotyledones — Continued. rage. 

 Cupuli ferae — Continued. 



Quercus — Oaks — Continued. 



Engelmann oak (Quercus engehnanni Greene) 2S9 



California scrub oak (Quercus dumosa Nuttall) 292 



Canyon live oak (Quercus ehrysolepis Liebmann) 295 



Quercus tomentella Engelmann 300 



California live oak (Quercus agrifolia Nee) 303 



Wislizenus oak (Quercus xcislizeni A. de Candolle) 307 



Price oak (Quercus pricei Sudworth) '_: 309 



Morehus oak (Quercus morehus Kellogg) 311 



California black oak (Quercus calif ornica (Torr.) Cooper) 313 



Tanbark oak (Quercus densi flora Hooker and Arnott) 317 



Ulniaceae 322 



Celtis — Hackberries 323 



Hackberry (Celtis occidentals Linnaeus) 323 



Palo bianco (Celtis reticulata Torrey) 325 



Lauraceae 327 



Umbellularia — Laurel 327 



California laurel (Umbellularia calif ornica (Hook, and 



Arn.) Nuttall) 1 327 



Saxifragacese 331 



Lyonotbamnus 331 



Western ironwood (Lyonotliamnus floribundus Gray) 331 



Platanaceae 334 



Platanus — Sycamores 334 



California sycamore (Platanus racemosa Nuttall) 335 



Rosacea? 33G 



Cercocarpus— Mountain mahoganies 336 



Trask mahogany (Cercocarpus traskUr Eastwood) __J 337 



Curl-leaf mahogany (Cercocarpus ledifolius Nuttall) 338 



Birch-leaf mahogany (Cercocarpus parvifolius Nuttall) 340 



Malus — Apples 342 



Oregon crab apple (Malus rivularis (Dougl. in Hook.) 



Roemer) 342 



Amelanchier — Serviceberries 345 



Western serviceberry (Amelanchier alnifolia Nuttall) 345 



Crataegus — Haws 347 



Black haw (Crataegus douglasii Lindley) 347 



Heteromeles 349 



Christmas berry (Heteromeles aroutifolia Roemer) 349 



Prunus — Cherries and plums 351 



Western plum (Prunus subcordata Bentham) 352 



Bitter cherry (Prunus emarginata (Dougl.) Walpers) 354 



Western choke cherry (Prunus demissa (Nutt.) Walpers 356 



Hollyleaf cherry (Prunus ilieifolia (Nutt.) Walpers) 359 



Legumiuosae 361 



Prosopis — Mesquites 362 



Screwpod mesquite (Prosopis odorata Torrey and Fremont)- 362 



Mesquite (Prosopis juliflora glandulosa (Torr.) Sargent) 364 



Cercis — Judas trees 367 



California redbud (Cercis occidentalis Torrey) 367 



Acacia - 369 



Cat's claw (Acacia greggii Gray) 369 



